218 LLOYD'S NATURAL HISTORY. 



The present species, which is very common in North 

 America, measures two inches and upwards across the wings. 

 As regards our two British Clouded Yellows it may be regarded 

 as somewhat intermediate between them, being of a sulphur- 

 yellow colour, like the male of E. kirbyi, but with a continuous 

 black border, lined with yellow in the male, and spotted with 

 yellow in the female, like that of E. hyale. There is a black 

 discoidal spot on the fore-wings, and a rather broad rust- 

 coloured spot on the hind-wings ; the antennae and fringes are 

 reddish. Beneath, the discoidal spots are all pupilled with 

 silvery, that on the hind-wings being double, and there is a row 

 of ferruginous spots on the disc. 



This Butterfly has the habit of congregating in great numbers 

 on damp mire. I have not heard of our European species 

 of Eiirymus acting thus. 



The larva is green, more or less varied with rosy, and feeds 

 on a variety of leguminous plants. The pupa is green, irrorated 

 with yellowish-white. 



This Butterfly was confounded by many of the older ento- 

 mologists, both in England and on the Continent, with the 

 European E. palceno (Linn.) ; but this insect is of a greener 

 yellow in the male, and whiter in the female. The American 

 species was originally introduced into our British lists on the 

 strength of specimens in the cabinets of Francillon and Swain- 

 son, both of whom were in close correspondence with Abbot, 

 the famous Georgian entomologist, from whom their specimens 

 were almost certainly received. 



Hiibner figured E. palceno under the name of europome^ 

 which Haworth adopted, and gave an unsatisfactory descrip- 

 tion, taken, as Haworth admits, from a German specimen. 



Stephens' figures, derived from specimens obtained from the 

 collections of Francillon and Marsham, undoubtedly represent 

 the American insect; and between 1820 and 1840 various 



